<template>
  <div :class="{hidden: hidden}" class="pagination-container">
    <el-pagination
      :background="background"
      v-model:current-page="currentPage"
      v-model:page-size="pageSize"
      :layout="layout"
      :page-sizes="pageSizes"
      :total="total"
      v-bind="$attrs"
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
    />
  </div>
</template>

<script>
import {computed, defineComponent} from 'vue'
import {scrollTo} from '../../utils/scroll-to'
export default defineComponent({
  props: {
    total: {
      required: true,
      type: Number,
      default: 0,
    },
    page: {
      type: Number,
      default: 1,
    },
    limit: {
      type: Number,
      default: 20,
    },
    pageSizes: {
      type: Array,
      default: () => {
        return [10, 20, 30, 50]
      },
    },
    layout: {
      type: String,
      default: 'total, sizes, prev, pager, next, jumper',
    },
    background: {
      type: Boolean,
      default: true,
    },
    autoScroll: {
      type: Boolean,
      default: true,
    },
    hidden: {
      type: Boolean,
      default: false,
    },
  },
  emits: ['pagination', 'update:page', 'update:limit'],
  setup(props, ctx) {
    const currentPage = computed({
      get() {
        return props.page
      },
      set(val) {
        ctx.emit('update:page', val)
      },
    })
    const pageSize = computed({
      get() {
        return props.limit
      },
      set(val) {
        ctx.emit('update:limit', val)
      },
    })
    const handleSizeChange = (val) => {
      ctx.emit('pagination', {page: currentPage, limit: val})
      if (props.autoScroll) {
        scrollTo(0, 800)
      }
    }
    const handleCurrentChange = (val) => {
      ctx.emit('pagination', {page: val, limit: props.pageSizes})
      if (props.autoScroll) {
        scrollTo(0, 800)
      }
    }
    return {handleCurrentChange, handleSizeChange, currentPage, pageSize}
  },
})
</script>

<style scoped>
.pagination-container {
  background: #fff;
  padding: 32px 16px;
}
.pagination-container.hidden {
  display: none;
}
</style>
